Chemistry General Science Test Hard Mode

Sr. #	Questions	Answers Choice
1	Water (H2O) is liquid while hydrogen sulphide (H₂S) is a gas because	Water has higher molecular weight Hydrogen sulphide is a weak acid Sulphur has high electronegativity than oxygen Water molecules associate through hydrogen bonding.
2	The valence orbital configuration of an element with atomic number 23 is	3d<sup>5</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>, <span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>3</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>1</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup> <span style="font-size: 14.44444465637207px;">3d</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4s</span><sup>2</sup>,<span style="font-size: 14.44444465637207px;">4p</span><sup>1</sup>
3	Which quantum number is sufficient to describe the electron is hydrogen atom?	/ n m s
4	When electrons revolve is stationary orbits	There is no change in energy level They vecome stationary They are gaining kinetic energy There is increase in energy
5	The symbol of the element whose atoms have the outer most electronic configuration 2s² 2p³ is	N Li P Na

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